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In WinRT (C#, XAML), ScrollViewer is a sealed class, and I can't extend it, but I need to overwrite some methods (for example: ScrollToHorizontalOffset).
Is it possible to override methods of a sealed class?
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If you create a sealed method, it cannot be overridden.
Sealed classes are used to restrict the users from inheriting the class. A class can be sealed by using the sealed keyword. The keyword tells the compiler that the class is sealed, and therefore, cannot be extended. No class can be derived from a sealed class.
Methods that are declared private or static cannot be overridden either because they are implicitly final. It is also impossible for a class that is declared final to become a super class.
A sealed method in an unsealed class is a method which cannot be overridden in a derived class of this class.
No - in order to override a method, you have to derive from it, which you can't do when the class is sealed.
Basically, you need to revisit your design to avoid this requirement...
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You can't inherit from a sealed class, so no inheritance, no override.
See: override C#
The override modifier is required to extend or modify the abstract or virtual implementation of an inherited method, property, indexer, or event.
See: sealed C#
When applied to a class, the sealed modifier prevents other classes from inheriting from it.
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